US PATENT SUBCLASS 148 / 194
.~ Chemical-heat removing (e.g., flame-cutting, etc.) or burning of metal

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
194.~ Chemical-heat removing (e.g., flame-cutting, etc.) or burning of metal {9}
195  DF  .~.~> Control responsive to sensed condition of workpiece
196  DF  .~.~> Program or pattern control
197  DF  .~.~> Utilizing fluid contact other than flame
198  DF  .~.~> With solid additive {1}
200  DF  .~.~> Of edge or corner (e.g., deburring, etc.)
201  DF  .~.~> Cylindrical workpiece
202  DF  .~.~> Scarfing (e.g., desurfacing, planing, gouging, etc.) {1}
204  DF  .~.~> Flame piercing
205  DF  .~.~> Plural nozzles or plural work-contacting jets

DEFINITION

Classification: 148/194

Chemical-heat removing (e.g., flame-cutting, etc.) or burning of metal:

(under subclass 95) Process which is directed to utilizing chemically generated heat to remove or sever a portion from a solid or semisolid metal workpiece by localized burning (i.e., oxidization) or by localized melting (e.g., flame-cutting, etc.).

SEE OR SEARCH CLASS

164, Metal Founding, particularly

460, wherein there is flame-cutting of a cast product while a continuous portion of the cast product is still associated with the casting mold and see (2) Note thereunder.

166, Wells, particularly

297, for a process of in situ chemical-heat cutting of metal structures in the earth.

219, Electric Heating, appropriate subclasses for the utilization of arc, plasma, laser or other electrically generated heat cutting and particularly

69.1, for oxygen assisted arc cutting, per se. (1) Note. In general, heat cutting and chemical-heat

removing or burning of metal will go to Class 148. A special line evolved in Class 219 wherein arc-cutting in air or with Oxygen assisted arc-cutting (see Class 219, subclass 69.1, (1) Note) remained in Class 219 regardless of the oxidation reaction involved.